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baslinux - Re: [BL] zipslack (UMSDOS), pkunzip, and 'Not a kernel image'

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  • From: sindi keesan <keesan AT sdf.lonestar.org>
  • To: baslinux AT lists.ibiblio.org
  • Subject: Re: [BL] zipslack (UMSDOS), pkunzip, and 'Not a kernel image'
  • Date: Mon, 1 Nov 2004 02:11:12 +0000 (UTC)

On Mon, 1 Nov 2004 3aoo-cvfd AT dea.spamcon.org wrote:

sindi keesan wrote:

I tried pkunzip -d zipslack.zip
Insufficient memory for pkunzip.
Can the extracted file be larger than 64MB for DOS pkunzip?

I had the same problem with the old (standard) DOS
version of pkunzip. I believe there is a more recent
DOS version that is able to handle very large files.

Is that new version freeware? I think we ran into a for-pay version.



Does UMSDOS overheat things more than regular linuxes?

UMSDOS certainly carries more overhead than ext2.
Each Linux file is stored individually on the DOS
filesystem, so even a tiny file takes up a whole
cluster. Linux has *lots* of tiny files. Add to
that the complications of maintaining a permission
structure on a filesystem which doesn't do permissions
and of doing symbolic links on a filesystem which
doesn't do those either. And then there's the DOS
fragmentation problem.

So yes, Linux has to work harder on UMSDOS.
And it's slower, and bigger, and less stable.

Took about a minute to load. I did not manage to crash it but I have not yet figured out how to use it. I can copy files over from the rest of the partition (from DOS) so I copied kermit. No elm or mutt, no links.
No eznet. I tried to load the sb sound modules but it said the device was already busy. Won't play sound. It has a lot of stuff for other hardware and locales and also all the compiler files and perl and loads of doc files and groff and all the man pages.

>
Note: the loop filesystem (used by BL3) is not
subject to those issues. Although the image file
(fs.img) does sit on a DOS filesystem, the actual
filesystem is ext2. Permissions, links, clusters
are no problem. And the fragmentation issue relates
to only one file (the image file), not to the zillions
of Linux files.

Is there some way to defragment the loop file or is this not necessary?
Mulinux had about 3000 linux files. How many is a zillion? Mulinux was about a 2MB download and this was a 37MB zip file so 20x3000=60,000 files? It may have been ten times that. Too many for DOS to defragment. Is there some limit as to how many files can be in a DOS partition?

Cheers,
Steven

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keesan AT sdf.lonestar.org
SDF Public Access UNIX System - http://sdf.lonestar.org




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